Stretcher and guider



P 5, 1932- R. D. TACKABERRY ,875,777

STRETCHER AND GUIDER Filed Aug. 15, 1929 3 Sheets-Sheet 2 I 7721827207": flobertflliwkabery Sept. 6, 1932. R A E Y 1,875,777

STRETCHER AND GUIDER Filed Aug. 13-. 1929 3 Sheets-Sheet 3 4 Patented Sept. 6, 1932 UNITED "STATES ROBERT DANIEL TACKABERBY, or LEwIs'ron, MAINE STRETCHER AND GUIDED Application filed August '13, 1929'. Serial No. 885,559.

My present invention relates to a stretcher and guider for cloth and like webs of material which are to be fed and/or-stretched. It comprises in part an improvement on the de- 6 vice set forth in my prior Letters Patent No.

1,678,925, dated July 31,1928.

In machines of this character much difiiculty has been experienced in controlling the feed or the amount of stretch with cloths of certain charactersnotably those of thin or sheer nature or those of loose weave. Various types of machines and rolls have been used with varying degrees of success, but there has been a constant demand for a better and more efiicient functioning to meet production con ditions.

My present-invention is directed to such ends, and I have shown in the accompanying drawings an embodiment which has proven' 3 to be of the desired efiiciency and versatility.

Such showing is not to be understood as in any way limiting, however, and while I do make specific claim to certain novel features, the machine so shown is to be understood as disclosed primarily as an embodiment offered as illustrative of broader principles capable of other embodiment, arrangement or design.

The drawings to which descriptive reference is made in the following specification comprises the following figures: I

Fig. 1 is an elevation of the above men tioned machine.

Fig. 2 is a plan view of the same. Fig. 3 is an end elevation from the right of 3 Fig. 1.

Fig. 4 is a fragmentary section on the line 4-4,.of Fig. 1, with the yoke turned at an angle of a Fig. 5 is a section on the'line 55, of Fig. 1. Iiig. 6 is a sectional detail of the switch contro Y Fig. 7 is a detail of the disc lock, and

Fig. 8 is a detail of the wiring diagram.

My invention is directed ,to. the guidance and stretch of cloth or like material, as in passing to a mangle or a drier or any subse quent machine to prevent the variation in the I path of the material or to remove folds or ,4, fullness or otherwise to provide a sidewise the'position of'disc 12 is to ermit the yoke,

shown in Fig. 4, to be turned t rough an angle of 90 or less to a position such for example as that shown in Fig. 5. The means for securing the disc 12 in different positions relative to the ring bearing members 13 is more clearly shown in Fig. 7, in which a tapered end of I an adjusting or lock-screw, engages a pin passing through the head disc 12 which pin is forced out against the ring bearing member '13 to hold the partsin proper relative position.

The discs 12 are connected across by a pair of guide rods with opposed bearings 33 and 34 in which are swivelled the yokes 5 which carry the rolls 1 and 2.

The slides 31 are relatively adjustable to position the two roll pairs to grip the marins of webs of cloth or other strips of diferent widths. This adjustment is effected.

by a transverse feed screw 40 of reversed tendency or trend in the feed or flow of the 0 on which are'slides 31 carrying brackets 32 and being provided ,7

threads which engage with internally th'readed brackets 41 hung from the slides 31. The screw-is journalled at each end in the discs 12 and rotated by the hand wheel 15.

Adjustment is thus made for different .widths in whatever position of feed or guidance the roll pairs may be. The bearing 34 for the yoke 5 of the upper roll 1 is a simple swivel bearing. The bearing 33 for the yoke 5 of the upper roll 2 is a combined swivel and slide bearing.

The stem ofthis yoke in the bearing 33 is' pressed down by a spring 3 acting on a plate 3 which bears directly on the end of a lever 11 which thus controls the spring 3 and can release its pressure on the roll 2.

The lever 11 is controlled by a solenoid 10 art, is'mounted on an arm which-is tilted through rotation of the shaft on which the sleeve 17 is mounted. The feeler lever 7 rotates the sleeve 17 which is secured to the shaft. The function of the feeler lever 7 is to actuate this control lever 11 and release the pressure on the roll 2 thus letting slip its grip on the margin of the cloth passing between it and its-opposed roll 1. The control of the lever 11 by the feeler lever 7 is obtained through a switch M controlled by the feeler lever '7 (see Fig. .6) and the solenoid 10 which actuates the control lever 11. In Fig. 8 is shown the mercury switch M in the circuit of the solenoid 10v which controls the control lever 11.

The lever or feeler arm 7 as shown in Fig. 6 is on the sleeve 17 of a hub 18 controlled,

by the coiled clocklike'spring 18 (see Fig.

80 6) coiled within the hub 18, one end of the end being fixed to the relatively movable hub 18. This holds the feeler arm 7 yieldingly ating rollers which are so supported as to be swiveled about or skewed at an angle, it is to be understood that othertypes of rolls such as the spiral type, or a roll having a tapered surface, may be employed. In Fig. 2, the dotted lineposition indicates the position of the respective pair of rollers adjust ed in the swivel bearing 33, so that the rollers are arranged at an angle to the longitudinal travel of the material through the machine. The effect or action of angular disposition of the rolls is to obtain a stretching in the direction of the width of the material.

In such a machine as herein involved there 1s a need of a general powercontrol to pre-- vent continuance of circuit at breakage .or piece ends or at shut down. I thereforepreferably provide a stop device which will pro-.

spring being fixed to the sleeve 17,- the other on this arm 7 actuates the release of the roll- While I have shown a pair of co-oper- B over which the web runs so as in normal operation to keep it in continuous rotation. The end shaft of the roll B is threaded. 1 This is preferably with a sharp pitch and multiple thread to effect a quick throw of the nut 22. This nut 22 is opposed by a spring 22 so that upon failure of the roll B to continue rotation, the nut 22 is-run back by the spring 22 to tip the lever A and thus actuate a switch M or S and thus cut the current as at M, S in Fig. 8. The nut is indicated in the form of a disc 22 which is threaded on the end of the shaft of the roll B, the threaded portionof the shaft being concealed in Figs. 1 and 2 of the drawings by the spring 22. The arrangement of the lever A on which the mercury switch M is mounted is more v clearly indicated in Fig. 3. The mercury switch M mounted on the lever A (see Figs. 1, 2 and 3) is of a type well-known in the art and either establishes or interrupts a circuit,

by a tilting of the switch M, which causes a quantity of mercury to flow so as to either interrupt or complete a circuit between two terminals arranged in a glass tube.

As indicated in Fig. 1, the partsincluding switch M, are in a position when the machine is idle, when the disc nut 22 holds the lever.

A in a horizontal position. (See Fig. 3).

When the machine starts, the disc nut 22 is the disc nut 22, the lever A, and the mcrcury,

chine stops, the disc nut 22is retu-rnedto its former position by the coil spring 22 and the lever A isagain restored to its original position, which in turncause's a tilting of the mercury switch mounted ,on the lever A. It is understood, of course, that the mercury switch for releasing the roll pairs and the mercuryswitch operated through the nut 22 and lever A are independent switches.

In operation such a machine functions sub stantially as follows. It will be understood at the outset that the machine as shown, or as may be otherwise organized, may need to be run at different angles.

In the machine as shown, regardless of the angle of feed, the rolls 1 and 20f the roll pairs will beset to the degree of angularity which will .give the trendor the desired stretch as may be desired. When the pair of rolls are arranged at an angle, such as the dotted line position indicated at Fig. 2 assuming that the material is fed downwardly, the efi'ect of the angular disposition of the rolls 12 is to stretch the'ma-terial in the direction of its width; the degree of stretchin may be varied with the angular setting 0 the rolls.

As the web runs therolls grip it marginally according to the pressure applied through the adjustment screw 4. The lower roll 1 is shown as corrugated and the upper roll plain. All such is optional, but specificall I provide a soft or compressibleupper ro 2 and a grooved lower metal roll as at 1 co acting therewith. This worksmost favorably with certain weaves which are most difficult of control.

The configuration of the rolls or otherwise construction, may all be varied. It is to be recognized that there is a plural function desirable in any such machine, these functions being closely combined or coordinated, and one of the advantages of my invention consists in that possibility of mechanical coordina-' tion.

What I therefore claim and desire to secure by Letters Patent is 1. In a device of the class described, a frame, a pair of rolls rotatably mounted therein on horizontal axes, and each roll being independently swivelled ona vertical axis therein, and means for adjustably holding the rolls in contact with each other.

2. In a device of the class described, a

frame, a pair of heads rotatably mounted v therein on horizontal axes, a pair of rolls I Y in each head and each roll being independent- 1y swivelled on a vertical axistherein, and means for adjustably holding the rolls in contact with each other.

3. In a device-of the class described, ai frame, a pair of heads-rotatably mounted- 

